Bunch-builder mechanism



A ril 29, 1924. 1 1,491,808

R. W. MCVEY BUNCH BUILDER MECHANISM I [Ni 151M011.

777mm Wwzsou ["19 Y m. 6Z- TTORNEY;

April 29, 1924. 7

. R. M VEY BUNCH BUILDER MECHANISM Filed May 26 1923 1 2 Sheets-Sheet 2 i H H i I I a 3/ L. /G.6 .38

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m9. Y BY Y Fiifented Apr. 29, 1924.

UNITED STATES PATENT OFFICE.

RICHARD WATSON McVEY OF ADAMS, MASSACHUSETTS, ASSIGNOR TO WHITIN MACHINE WORKS, OF WHITINSVILLE, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

BUNCH-BUILDER MECHANISM.

Application.v filed May 26, 1928. Serial No. 641,602.

To all whom it may concern:

' Be it known that I, RICHARD WATSON MOVEY, a citizen of the United States, re-

siding at Adams, in the county of Berkshire and Commonwealth of Massachusetts, have invented a new and useful Improvement in Bunch-Builder Mechanisms, of which the following is a specification.

This invention relates to spinning ma- 1 chines of that type constructed to wind on the yarn bobbin first a preliminary winding or bunch then a main winding, and the principal object of the invention is to provide a mechanism for controlling the traverse of the ring-rail for laying the preliminary winding and automatic means of simple and inexpensive construction whereby.

the preliminary winding mechanism is rendered inoperative .after the bunch has been formed.

Another object of this invention is to provide adjustable means whereby the size and position of the bunch may be varied.

With these objects in view, the invention comprises certain novel constructions, combinations and arrangements of parts as will be hereinafter specified and claimed.

In the drawings:

Figure 1 is a front elevation of a sufficient 3o portion of a spinning machine embodying the invention to make clear its construction and manner of operation. Figure 2 is an enlarged section on the line 22 of Figure'l;

Figure 3 is a detached detail showing the locking latch in its ino erative position;

Figure 4 is an end'e evation of Figure 3; Figure 5 is an enlarged section on line 5 5 of Figure 3; Figure 6 is an enlarged section of the builder cam on diametrical line 66 in Figure 2;

Figure 7 is an enlarged front elevation of the knock-off lug cam;

Figure 8 is an end elevation of the same; and

Figure 9 shows an alternative construction of knock-off means of the locking latch.

rings 6 provided with the usual travelers, and is supported by the lifter rod 7, the

lower end8 of which rests upon a roll 9 mounted on the cross arm lever 10 pivoted at 11 upon the ban er 12 extending. from the bottom of the b0 ter rail 2. The lever 10 is counterbalanced by a weight (not shown) whereby the upward traverse of the ring rail is effected. Extending upward from the lever 10 is a segment arm 13 to which is connected one end of a chain-14 which passes over the sheave pulley 15 'and is then connected to the filling winding lever 16 working in conjunction with the builder lever 17 of usual construction pivoted at 18 on a stud fixed to the head end 1. While only a single lever 10 and lifter rod 7 are shown, it is to be understood that any suitable number of these may be used and may be connected, as usual, to move in unison to cause the ring rail 5 to move up and down under the control of the builder motion as is common and well understood in ring spinning machines.

The winding lever 16 to which the builder motion chain 14 is attached derives its motion from the rack 19 through action of the roll 20 fastened to the rack and coacting with the upper surface of the windin lever 16. Motion is imparted to the rack y the worm 21 fixed to the rotary shaft 22 held in suitable bearings on the builder lever 17. An intermittent motion is imparted to the shaft 22 by the ratchet 23 fixed thereon acting in conjunction with the pawl 24 carried on the arm 25 which is actuated by the rod 26 as the builder lever 17 is raised and lowered.

' Mounted for rotative movement in the head end 1 is the cam shaft 27 which may 95 ower as by the gear 28, Figure 1. A uilder motion cam 29 of usual construction is fastened to the inner end of shaft 27.

The rotation of the cam actin on follow roll 30 revolvable on a stud xed to the builder lever 17, causes the latter to swing up and down on its pivot 18 and through the connections between the builder lever and the ring rail the traverse of yarn being wound on the bobbin is eflected.

The construction above described is common to spinning machines as now in use and as it is well understood by those skilled in the art, further explanation is deemed unnecessary.

To suit particular requirements as to speed in the laying of the yarn onto the bobbins the cam 29 may have one or more cam oints each of which causes an upward and downward movement of the rin jrail. The better to illustrate my invention make use of a four point cam as shown. 0n the web or arm of one or more points of the cam 29, a cam shaped lug 31 is adjustably mounted by suitable means such as bolt 38 and clamping late 40.

Prefera ly use two lug cams diametrically opposite each other as shown in Figure 2a The number of lug cams and theirvdistance apart determines the amount of yarn wound in the bunch on the bobbin. As the yarn forming the bunch is classed as waste in the process of weaving it is economy on the part of weavers to have the bunch as small as is ossible' to perform its function with the eeler mechanism of weft replenishin looms.

lnstea of mounting the lug cams on the builder motion cam 29 as above described, an alternative construction (see Figure 9) may be had by using an independent cam 39 fixed to shaft 27, rotating in unison with cam 29, and operating in conjunction with the knock-ofi roll 37 to release the locking member 32. y

In order to sheet the winding of the yarn in the form of a bunch at the lower part of the bobbin 1 retard the traverse of the ring rail by means of a locking latch 32 abutting against the builder lever 17. The latch is pivoted on a stud 33 fixed in bracket 34 in stationary relation to the framing of the machine; the-latch beingprovided with an abutment member 35 adjustably mounted on the lower part of the latch. Aboutmidway of the latch a stud 36 is fixed on which a revolvable kno'ck-ofi' roll 37 is held in the plane of rotation of the lug cam.

In operation the operative, after starting the machine, depresses the ring rail by means offoot pressure applied to the end of lever 10, thus positioning the ring rail for the beginning of the bottom traverse of the yarn. This action also depresses the builder lever to its lowest position acted thereon by menses the cam 29. The operative then manually swings the latch 32 so that the member 35 rests on top of the lever 17 preventing it from moving upwardly, thus rendering the ring rail stationary and causing the yarn to wind in a bunch; meanwhile the rotary motion of the cam 29 gradually brings the lug cam 31 into contact with knock-0d roll 37, the shape of the lug cam being such that the locking action of the latch is removed from the builder lever and in consequence the builder lever resumes its upward and downward motion with-out restriction thus permitting the main winding of the yarn on the bobbin in the regular manner. The latch after being pushed from contact with the builder lever swings to such a position as to be just out of the path of motion of the builder lever. To prevent the latch from swinging into contact with thebuilder lever, except when desired, means are provided to act as a brake to stop any swinging motion that might occur from vibrations of the machine, preferably 1 use a compression spring 41, one end held in a socket in the upper part of latch and the other pressed against. the surface of fixed bracket 34.

What I claim is:

1. In a machine of the character. described, the combination of a series of spindles for supporting and rotating yarn bobbins, yarn guiding means, a builder lever, a rotar cam for operating said lever, a manual y operated locking member pivoted 'to' a stationary part of the machine and adapted to abut against the builder lever to retard its movements, one or more lug, cams adjustably mounted on the web or arms of the rotar cam, a knock-0d memher in a fixed rela-tlon to the locking member and an abutting member adjustably mounted on the locking member.-

2. In a machine of the character described, the combination of a series of spindles for supporting and rotating yarn bobbins, yarn guiding means, a builder lever, a rotary cam for operating said lever, a manually operated locking member pivoted to a stationary part of the machine adapted to abut against the builder lever to retard its movements, means to maintain the locking member in an inoperative relation with the builder lever, one or more lug cams adjustably mounted on the web orarms of the rotary cam, a knock-off member in a stationar relation to the locking member and an autting member adjustably mounted on the locking member.

3. In a machine of the character described, the combination of a series of spindles for supporting and rotating yarn bobbins, yarn guiding means, a builder lever, a rotary cam for operating said lever, one or more cam lugs adjustably mounted on the web or arms of said cam, a manually operlid ated locking member pivoted to a stationary knock-01f member in a stationary relation to part of the machine adapted to abut against the locking member and an abutting member the builder lever to retard its movements, adjustabl; mounted on the locking member. 10 a compression spring located between the In testlmony whereof, I have signed this 5 locking member and its support whereby the specification.

locking member is maintained in an inoperative relation 'with the builder lever,' a RICHARD WATSON MoVEY. 

